public static void Expand(Block to, BlockLightSource source, sbyte light, Block from, BlockFace fromFace)
{
var queue = new Queue <Block>();
Expand(queue, to, source, light, from, fromFace);
UpdateRender(queue);
}
public static void RemoveLightSource(BlockLightSource source)
{
var queue = new Queue <Block>();
var list = new ELinkedQueue <Block>();
RemoveLight(list, source.Block, source);
GetNearbyLights(queue, list);
ExpandNearbyLights(list, null);
UpdateRender(queue);
}
public static void ExpandFrom(Block from, BlockLightSource source, sbyte light)
{
var queue = new Queue <Block>();
for (var i = 0; i < Faces; i++)
{
var face = (BlockFace)i;
if (!from.CanLightPassThrough(face))
{
continue;
}
var opposite = BlockFaceMethods.GetOpposite(face);
var neighbour = from.GetNeighbour((BlockFace)i);
Expand(queue, neighbour, source, light, from, opposite);
}
UpdateRender(queue);
}
private static void Expand(Queue <Block> updatedBlocks, Block to, BlockLightSource source,
sbyte light, Block from, BlockFace fromFace)
{
if (to == null || !to.CanLightBePassedFrom(fromFace, from))
{
return;
}
var blockLight = to.BlockLight;
if (blockLight.Light >= light)
{
return;
}
blockLight.Light = light;
blockLight.Source = source;
updatedBlocks?.Enqueue(to);
var toLight = (sbyte)(light - to.StaticData.BlockLightPassReduction);
if (toLight < 1)
{
return;
}
for (var i = 0; i < Faces; i++)
{
var face = (BlockFace)i;
if (!to.CanLightPassThrough(face))
{
continue;
}
var opposite = BlockFaceMethods.GetOpposite(face);
var neighbour = to.GetNeighbour((BlockFace)i);
if (neighbour == null)
{
continue;
}
Expand(updatedBlocks, neighbour, source, toLight, to, opposite);
}
}
public Block(BlockStaticData staticData, Chunk chunk, Vector3i position, Rgba32I textureFilter)
{
_weakReference = new WeakReference <Block>(this);
_staticData = staticData;
_chunk = chunk;
_position = position;
_collidableFaces = new bool[6];
_textureFilter = textureFilter;
_neighbours = new WeakReference <Block> [6];
_blockLight = new BlockLight();
var lightSource = staticData.LightSource;
_blockLightSource = lightSource ? new BlockLightSource(this, staticData.LightSourceLight) : null;
if (!lightSource)
{
return;
}
_blockLight.Light = _blockLightSource.SourceLight;
_blockLight.Source = _blockLightSource;
}
protected bool Equals(BlockLightSource other)
{
return(_block.Position.Equals(other.Block.Position));
}
private static void RemoveLight(ELinkedList <Block> removedBlocksList, Block block, BlockLightSource source)
{
var light = block.BlockLight;
if (!source.Equals(light.Source))
{
return;
}
var oldLight = Equals(block.BlockLightSource, source) ? Block.MaxBlockLight : light.Light;
light.Light = 0;
light.Source = null;
removedBlocksList.Add(block);
for (var i = 0; i < Faces; i++)
{
var face = (BlockFace)i;
var opposite = BlockFaceMethods.GetOpposite(face);
var neighbour = block.GetNeighbour((BlockFace)i);
if (neighbour == null)
{
continue;
}
if (!block.CanLightPassThrough(face) || !neighbour.CanLightBePassedFrom(opposite, block))
{
continue;
}
if (oldLight < neighbour.BlockLight.Light || !Equals(neighbour.BlockLight.Source, source))
{
continue;
}
RemoveLight(removedBlocksList, neighbour, source);
}
}